The Breathingtime website which normally shows workshop dates run by Jean Farrell at her centre in Westport (normally once a month) and in Tullow is down at the moment. However here are the workshop dates that I'm aware of:
October 7th - 10th (three day workshop with two breathings per person)
November 5th - 7th
December 10th - 12th
You can contact her at email@example.com
October 15th - 17th (I'm not 100% certain of this date but there is a workshop here in October)
Alternatively Martin Duffy runs holotropic breathwork weekends in Dunderry, Co. Meath about 3 times a year. Their next breathwork weekend is:
Dunderry, Co. Meath:
November 5th - 7th Full details here.
James Cunnane runs one day workshops in Wicklow. Full details here.
Newcastle, Co. Wicklow:
Alternatively if you wish to do a one to one workshop, Elisclare Lynch-O'Connor runs one to one sessions in Dun Laoghaire on Sundays. Contact her here.
If you wish to make contact with people in Ireland and worldwide you can join the holotropic breathwork community http://www.ahbi.org